Battery-terminal protector



Sept. 2 .1924;

1,507,320 w. A. MACKENZIE BATTERY TERMINAL PROTECTOR Filed Sent. '7. 1923 LWL i/Yac/rerzzz? k r Patented Sept. 2,1924.

" H A. MACKENZIE, LONG BEACH, CALIFORNIA.

BATTERY-TERMINAL PROTECTOR Application filed September To all whom it'may' concern:

Be it known that I, WILLIAM A. Macxnnzrn, a citizen of the United States, resid ing at Long Beach, in the county of Les Angeles and State of California, have invented new and useful Improvements in Battery-Terminal Protectors, of which the following is a specification.

This invention relates to electric batteries to and more particularly to battery terminal protectors.

- It is an object of the present invention to provide a simple, inexpensive and effective means for covering the usual terminals rolo vided in the top of storage batteries. torage batteries are usually rovided with removable filling plugs an these plugs are usually provided with vent apertures. The invention broadly consists of an elastic to cover perforated so as to be placed upon a plug or plug receiving parts and to inherently contract upon an applied plug to prevent escape of gases around the plug, the cover being of such dimensions as to practically lie over the terminals of the battery.

An object is to provide an elastic protector that may be readily applied and readily removed in case of necessity and replac Other cheats and advantages will be 1 made mani est in the following specifica tion of an embodiment of the invention illustrated in the accompanying drawings, wherein: v

Fig. l is a vertical section through a plug Se seat in the top of a storage battery and showing the respective detached plug and a fragment of the elastic cover indicating the normal or free state of the cover substance when detached.

Fig. 2 is an axial sectional view of the plug seat with a plug applied and showing the cover in depressed position to clear the plug.

Fig. 3 is an axial section of the assembled to parts showing the elastic cover sprung up to conceal the pl joint.

Fi 4.- shows a brm in which the inven-' tion is constructed as for adaptation to previously completed types of batteries Fig. 5 is a plan of the elastic cover.

In Figs. 1 and 2' a portion of a battery 2 is provided with a perpendicular plug seatv 3 to receive a complementary plu body a. In this form of the invention t e upper outer part of the seat wall is provided with an ular groove 3 The cover orming 7, 1928.- Serial No. 661,505.

element of the present invention consists of a sheet of live rubber 5, a blank of which is shown in Fig. 5. This sheet or rubber is provided.with one or more apertures 5 which have a normal diameter in the free state of the rubber sheet materially smaller than the diameter of the wall of the seat in which the groove 3 is provided so that when the sheet 5 is to be applied to the wall of the seat the aperture '5 must be greatly distended in order to encompass the rim of the. plug seat. The thus distended portion of the sheet 5 causes it to tightly hug the neck of the seat 3 and it is prevented from slipping by the groove 3 provided therefor.

The plug 4 has a head which is peripherally grooved at 4 and after the plug has been inserted in its seat 3 the elastic pliable sheet or cover 5 can be bodily shifted from the position shown in Fig. 2 upwardly so that it will encompass the head of the plug 4 and snugly crowd into the wide shallow groove P, as is clearly shown in F i 3.

It will be seen therefore that the r0 led portion 5 surrounding the rim of the plug I slopping out of the battery liquid and the escape of gases around the plug.

In order to adapt the present improvement to batteries of various forms, there is shown in Fig. i an adapting means including an externally threaded bushing 10 to engage threads 11 cut therefor in the usual plug seat 3. The bushing is provided with a rim 10 and in this is formed an annular seat or cove 10 into which can be sprung or wi contract the margin of the aperture 5! of the sheet 5. The bush ing is provided with a conical inner seat 12 complementary to a plu body 13 having a peripheral groove 13%. hus it will be-seen that the adapter may be screwed into the usual seat 3 and the plug 13 can be at will removed from the bushing 10 when the rubber sheet 5 is rolled down to release the plug.

Further embodiments, modifications and variations may be resorted to within the spirit of the invention.

What is claimed is: v

1. A protector for upper portions of storage batteries, said protector consisting oi'f a device applicable to a plug seat forming a lllt) adapted to cover a joint between an inserted plug and its seat to prevent leakage, said device consisting of a perforated sheet of rubber the edge of a perforation of which is adapted to be distended to receiveand then contract upon the plug seat.

A protector for upper portions of stor- 7 age batteries, said protector consisting of a device applicable to a plug seat forming a part of the battery and which device isadapted to cover a joint between an inserted plug and its seat to prevent leakage, said device consisting of a perforated sheet of rubber the edge of a perforation of which is adapted to be distended to receive and y then contract upon the plug seat and to encompass the plug seat and the applied plug.

4. A means for protecting the upper parts at the top of a storage battery having a plug seat, said means consisting of a sheet of rubber having an aperture the edge of which is adapted to be distended so as to encompass the plug seat, and a plugapplicable to said seat and provided with a surface onto which the portion of the rubber surrounding the plug seat can be rolled and upon which the rubber tends to contract and therefore cover the line of joint between the plug and the end of the valve of the plug seat.

5. In combination, a sheet of live rubber .having a perforation the edge of'which is from the plug seat and whereon the rubber will snugly contract.

6. In combination, a sheet-of live rubber having a perforation the edge of which is adapted to be distended around and contrac- I tively encompass a wall of a plug seat of a storage battery, and a plug adapted to fit said seat and having a smooth peripheral face over which a rubber sheet may be rolled from the lug seat and whereon the rubber will snugly contract, said smooth portion having a concave form so as to provide an interlock between the rolled-over rubber.

sheet and the plug.

7. In combination, a sheet of live rubber having a perforation the edge of which is adapted to be distended around and contractively encompass a wall of a plug seat of a storage battery, and a plug adapted to fit said seat and having a smooth peripheral face over which a rubber sheet may be rolled from the plug seat and whereon the rubber will snugly contract, said plug seat consisting of a bushing applicable to a part of the top of a battery.

In testimony whereof I have signed my name to this specification.

WILLIAM A; MACKENZIE. 

